Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed
Abstract Here, we use a unique long‐term data set on total organic carbon ( TOC ) fluxes, its climatic drivers and effects of land management from a large boreal watershed in northern Finland. TOC and runoff have been monitored at several sites in the Simojoki watershed (3160 km 2 ) since the early...
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crwiley:10.1111/gcb.12491 2024-06-23T07:55:31+00:00 Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed Lepistö, Ahti Futter, Martyn N Kortelainen, Pirkko 2014 http://dx.doi.org/10.1111/gcb.12491 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12491 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12491 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Global Change Biology volume 20, issue 4, page 1225-1237 ISSN 1354-1013 1365-2486 journal-article 2014 crwiley https://doi.org/10.1111/gcb.12491 2024-06-11T04:48:54Z Abstract Here, we use a unique long‐term data set on total organic carbon ( TOC ) fluxes, its climatic drivers and effects of land management from a large boreal watershed in northern Finland. TOC and runoff have been monitored at several sites in the Simojoki watershed (3160 km 2 ) since the early 1960s. Annual TOC fluxes have increased significantly together with increased inter‐annual variability. Acid deposition in the area has been low and has not significantly influenced losses of TOC . Forest management, including ditching and clear felling, had a minor influence on TOC fluxes – seasonal and long‐term patterns in TOC were controlled primarily by changes in soil frost, seasonal precipitation, drought, and runoff. Deeper soil frost led to lower spring TOC concentrations in the river. Summer TOC concentrations were positively correlated with precipitation and soil moisture not temperature. There is some indication that drought conditions led to elevated TOC concentrations and fluxes in subsequent years (1998–2000). A sensitivity analysis of the INCA ‐C model results showed the importance of landscape position, land‐use type, and soil temperature as controls of modeled TOC concentrations. Model predictions were not sensitive to forest management. Our results are contradictory to some earlier plot‐scale and small catchment studies that have shown more profound forest management impacts on TOC fluxes. This shows the importance of scale when assessing the mechanisms controlling TOC fluxes and concentrations. The results highlight the value of long‐term multiple data sets to better understand ecosystem response to land management, climate change and extremes in northern ecosystems. Article in Journal/Newspaper Northern Finland Wiley Online Library Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) Simojoki ENVELOPE(25.050,25.050,65.617,65.617) Global Change Biology 20 4 1225 1237 |
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Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Here, we use a unique long‐term data set on total organic carbon ( TOC ) fluxes, its climatic drivers and effects of land management from a large boreal watershed in northern Finland. TOC and runoff have been monitored at several sites in the Simojoki watershed (3160 km 2 ) since the early 1960s. Annual TOC fluxes have increased significantly together with increased inter‐annual variability. Acid deposition in the area has been low and has not significantly influenced losses of TOC . Forest management, including ditching and clear felling, had a minor influence on TOC fluxes – seasonal and long‐term patterns in TOC were controlled primarily by changes in soil frost, seasonal precipitation, drought, and runoff. Deeper soil frost led to lower spring TOC concentrations in the river. Summer TOC concentrations were positively correlated with precipitation and soil moisture not temperature. There is some indication that drought conditions led to elevated TOC concentrations and fluxes in subsequent years (1998–2000). A sensitivity analysis of the INCA ‐C model results showed the importance of landscape position, land‐use type, and soil temperature as controls of modeled TOC concentrations. Model predictions were not sensitive to forest management. Our results are contradictory to some earlier plot‐scale and small catchment studies that have shown more profound forest management impacts on TOC fluxes. This shows the importance of scale when assessing the mechanisms controlling TOC fluxes and concentrations. The results highlight the value of long‐term multiple data sets to better understand ecosystem response to land management, climate change and extremes in northern ecosystems. |
format |
Article in Journal/Newspaper |
author |
Lepistö, Ahti Futter, Martyn N Kortelainen, Pirkko |
spellingShingle |
Lepistö, Ahti Futter, Martyn N Kortelainen, Pirkko Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
author_facet |
Lepistö, Ahti Futter, Martyn N Kortelainen, Pirkko |
author_sort |
Lepistö, Ahti |
title |
Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
title_short |
Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
title_full |
Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
title_fullStr |
Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
title_full_unstemmed |
Almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
title_sort |
almost 50 years of monitoring shows that climate, not forestry, controls long‐term organic carbon fluxes in a large boreal watershed |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1111/gcb.12491 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fgcb.12491 https://onlinelibrary.wiley.com/doi/pdf/10.1111/gcb.12491 |
long_lat |
ENVELOPE(-59.194,-59.194,-62.308,-62.308) ENVELOPE(25.050,25.050,65.617,65.617) |
geographic |
Inca Simojoki |
geographic_facet |
Inca Simojoki |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Global Change Biology volume 20, issue 4, page 1225-1237 ISSN 1354-1013 1365-2486 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/gcb.12491 |
container_title |
Global Change Biology |
container_volume |
20 |
container_issue |
4 |
container_start_page |
1225 |
op_container_end_page |
1237 |
_version_ |
1802648155033960448 |